Coupling for drills.



\ useful PRESLAY C. vW'ILLS, GF MONTICELLG, UTAH, ASSL'GNOR (JF GNE-TH1 GALLGWY, OF PILONTROSE, CLGRLO COUPLNG FOR BBLI'LIS-L Application ed January 22. 19H3.

Speccaton of Letters Paentg )atend Jan. 217, 191% Be i?. known that I, Pmcnn' 'ILLS, A ci zen (if im United Sae? yasiding at Mmnillm in fini county 01 San Juan, Stale if Unn, have inwned eeft-ain new and nipimfemeriis in Coupiings for Drills; and do hereby deci-nre the following to be u fnii, cient, and exact description of the inven'ion, Sach viii enabie ohm' skilled in the art' i0 which i appeitain to make miti use the suine.

The presfant invention is directed to improvements in couplings for drilis. und ling fm? i151. @bien-,t to provide a simpie ami fe'i- @inni device thin clmracfi whereby he dili :and bit shaft may i ivctimiy @minvced, and ieid ifmiy in this positiim.

. further Uijefci' of he inwntion ivm'ife n manier Wiiinh i; uxcnedingiy six iin iiD-Vzuuctinn, anni mi@ which may im uicinzeii aff. a mininnlni cm, 'Wifi-i Shen@ and nhfr objQfftS 'in vien', this; i'mf'eni'imi iOSidPs in the nomi fcfxnrex fri @"iitiuimiom foin'mtun, cmnbinntnmg and rmx minnie* of parta to be hei-cinafer mur@ fuiiy dGsCiibd, ciaimed und ilnsfrzlted in iii@- mfcmnpanying; drawing, in winch Figure l :i Side vivatin of iin: pena si'iovfingj them in their cmqiizi im'r.. Fig". i is :i ionggfimiinni s-@siimizii View. n side elevation wf lle pants; pv th@ coupiing iwawi Fig. ifs :i tive view of the anp.

the sides Simi f3 upon the unimib i pmftion 2 an an: nuizu shimkim' l2 pn diced which limits the, niovfment uz iin; inn-.finally ei hand sleeve 13, wi' s adapted m incluse Sie ciicuzu n iii c i 'nsion 3 when the conical extension 5 ed in the coniczx bom 1G.

A cap 13 is proviffec` and is formed wih :i central aperture -r or Neceivingth driii -sinf- 7, Suid @up having its under side provided with mi zinnuiiiz ifi-ings he 51am@ being pi'ovifiitffi Wiii i0 t unipi/cd I in manufact like Mii iii@ mcfiium mi bmx, 10, whore- 13 'iirmdm upon the mi iin" upper il'miy miami-Qi! i pena t inn a :mi Simi mit the tifnnin, :1. Conicai i ifw www: mi of the mi having a shouhler to limity the movement thereof, and l above the upper surface of said head, as and 10 :1 cap having a Central aperture adapted to l for the purpose set forth.

receive the drill shaft, said rap having an f In testimony whereof, I affix my Signa annular exteriory fthreaded flange formed ture, inprononce of two witneses,

u )on its under .mr ace' :md ada )ted to engilge with the thread of the leeve, said PRESLAY C 'WYILLS' zmge being adapted to. bear against the Wvitnesses:

upper surface of the circular head, said cap N. C. CHRISTENSEN,

having a space formed therein and located I HEBER. CHRISTENSEN. 

